Affiliation:
1. Department of Chemistry Taras Shevchenko National University of Kyiv Volodymyrska Street, 64/13 Kyiv 01601 Ukraine
2. Enamine Ltd. Winston Churchill Street 78 Kyiv 02094 Ukraine
3. “Petru Poni” Institute of Macromolecular Chemistry Romanian Academy Aleea Gr. Ghica Voda 41A 700487 Iasi Romania
4. School of Chemistry Molecular Sciences Building University of Birmingham Edgbaston B15 2TT UK
Abstract
AbstractA series of chelating N N proligands, 3‐(2‐pyridyl)‐5‐alkyl‐1,2,4‐triazoles (HLAlk), where alkyl=methyl, ethyl, isopropyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl was used as building blocks for designing of coordination compounds. Their reaction with an equimolar amount of [PdCl2(CH3CN)2] led to formation of series of six novel palladium complexes [Pd(HLAlk)Cl2], in which ligands are coordinated in the acid form. New proligands and Pd(II) complexes were characterized by IR, 1H and 13C NMR spectroscopy and elemental analysis. The Pd(II) complexes showed an unusual downfield shift in 1H NMR of the aliphatic proton that is the closest to triazole ring, which suggests the C−H…Cl hydrogen bonding, supported by X‐ray data for Pd(HLc−Pr)Cl2 and Pd(HLc−Bu)Cl2.